Index Rebal/Special Situations, Quiddity Advisors

Janaghan Jeyakumar, CFA

Index Rebal/Special Situations

Quiddity Advisors

Pan-Asia Catalysts/Events

Index Rebalance

<ul>
<li>The ADDs/DELs for the ASX index family for the December 2025 index rebal event were announced after market close on Friday 5th December 2025. </li>
<li>There are 20 ADDs and 20 DELs collectively for ASX 50, ASX 100, and ASX 200.  We got 19/20 predictions correct.</li>
<li>In this insight, we take a look at our final flow expectations for each of these confirmed index changes.</li>
</ul>


The ADDs/DELs for the ASX index family for the December 2025 index rebal event were announced after market close on Friday 5th December 2025. 
There are 20 ADDs and 20 DELs collectively for ASX 50, ASX 100, and ASX 200.  We got 19/20 predictions correct.
In this insight, we take a look at our final flow expectations for each of these confirmed index changes.


Quiddity ASX Dec25 Results: 19/20 Correctly Predicted; US$770mn Combined One-Way Flow; Avoid Crowds

Clarity Pharmaceuticals Ltd / Index Rebalance

<ul>
<li>In this insight, we take a look at the potential index changes for ASX 200, 100, 50, and 20 in the run-up to the December 2025 index rebal event.</li>
<li>We expect two changes for ASX 50, two changes for ASX 100, and seven changes for ASX 200.</li>
<li>The official index changes will be announced after the close on Friday 5th December 2025.</li>
</ul>


In this insight, we take a look at the potential index changes for ASX 200, 100, 50, and 20 in the run-up to the December 2025 index rebal event.
We expect two changes for ASX 50, two changes for ASX 100, and seven changes for ASX 200.
The official index changes will be announced after the close on Friday 5th December 2025.


Quiddity Leaderboard ASX Dec25: Reference Period Ending Soon; Some Surprises Possible

Pan-Asia Index Rebalances/ Events/ Delta One, Periscope Analytics

Brian Freitas

Pan-Asia Index Rebalances/ Events/ Delta One

Periscope Analytics

Periscope Analytics focuses on event-driven trades across Asia Pacific and provides comprehensive, timely and systematic coverage of index changes to major Asia Pacific indices in a structured manner.

The analysis includes forecasted inclusions and exclusions to all major Asian indices that have significant amount of tracking assets, including estimates of passive buy/sell flow on the stocks. The service also provides commentary and impact of market consultations, ground rule changes, and other events (IPOs, spin-offs, M&A) that could lead to index changes and passive flow.

Periscope Analytics works with multi-strategy hedge funds, proprietary trading firms, stat arb trading groups and long-only investors that invest and trade in the Asia Pacific region with the data being used to trade index rebalances, avoid pre-positioning and passive flow, and to time entry into and exit from stocks.

Event-Driven Trades Across Asia Pacific

<ul>
<li>There could be 2 changes each for the ASX50 and ASX100 indices and 7 changes for the <a href="https://www.smartkarma.com/entities/s-p-asx-200" target="_blank" data-smartkarma-citation="entities:22901:1" rel="noopener">S&amp;P/ASX 200 (AS51 INDEX)</a> in December.</li>
<li>Passive trackers will need to trade a lot of stock in the forecast changes, with the impact being especially large for the changes to the <a href="https://www.smartkarma.com/entities/s-p-asx-200" target="_blank" data-smartkarma-citation="entities:22901:1" rel="noopener">S&amp;P/ASX 200 (AS51 INDEX)</a>. </li>
<li>The forecast adds have outperformed (and continue to outperform) the forecast deletes to the S&amp;P/ASX 100 Index and the <a href="https://www.smartkarma.com/entities/s-p-asx-200" target="_blank" data-smartkarma-citation="entities:22901:1" rel="noopener">S&amp;P/ASX 200 (AS51 INDEX)</a>. </li>
</ul>


There could be 2 changes each for the ASX50 and ASX100 indices and 7 changes for the S&amp;P/ASX 200 (AS51 INDEX) in December.
Passive trackers will need to trade a lot of stock in the forecast changes, with the impact being especially large for the changes to the S&amp;P/ASX 200 (AS51 INDEX). 
The forecast adds have outperformed (and continue to outperform) the forecast deletes to the S&amp;P/ASX 100 Index and the S&amp;P/ASX 200 (AS51 INDEX). 


S&P/​​​​​​​​​ASX Index Rebalance Preview (Dec 25): Changes Across Indices as Positioning Picks Up

Asia Pac ECM and Index Rebal, Shenton Research

Ke Yan, CFA, FRM

Asia Pac ECM and Index Rebal

Asia Pac IPO & Placement Research, China Biotech

DZT Research

DZT Research is an independent Asia Pacific equity specialist. Our quantitative research covers index rebalancing flows, alongside exchange data analytics accross Asia Pacific. On the equity capital markets side, we focus on Asia Pacific ECM, especially biotech and TMT. Our lead analyst is frequently cited by international media.

Quantitative Analysis

<ul>
<li>We analyzed the changes in short interest of ASX Stocks as of Oct 17th (reported today). The aggregated short interest was USD27.3bn.</li>
<li>We tabulate league tables for top short by value and short as multiple of ADT, as well as weekly increases &amp; decreases in short value, short as multiple of ADT.</li>
<li>We highlight short interest changes in Northern Star Resources, Transurban, ANZ, CSL, Macquarie.</li>
</ul>


We analyzed the changes in short interest of ASX Stocks as of Oct 17th (reported today). The aggregated short interest was USD27.3bn.
We tabulate league tables for top short by value and short as multiple of ADT, as well as weekly increases &amp; decreases in short value, short as multiple of ADT.
We highlight short interest changes in Northern Star Resources, Transurban, ANZ, CSL, Macquarie.


ASX Short Interest Weekly (Oct 17th): Northern Star Resources, Transurban, ANZ, CSL, Macquarie

<ul>
<li>In this insight, we take a look at the potential index changes for ASX 300, 200, 100, 50, and 20 in the run-up to the December 2025 index rebal event.</li>
<li>We expect two changes for ASX 50, two changes for ASX 100, and five changes for ASX 200.</li>
<li>The official index changes will be announced after the close on Friday 5th December 2025.</li>
</ul>


In this insight, we take a look at the potential index changes for ASX 300, 200, 100, 50, and 20 in the run-up to the December 2025 index rebal event.
We expect two changes for ASX 50, two changes for ASX 100, and five changes for ASX 200.
The official index changes will be announced after the close on Friday 5th December 2025.


Quiddity Leaderboard ASX Dec25: LNW Float Revision; Gold Names Rally; More Surprises Possible

Australia

Aussie Broadband Pty. Ltd. provides communication services. The Company offers internet, mobile data, and other telephony services. Aussie Broadband serves customers in Australia.

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Aussie Broadband (ABB AU)

Quiddity ASX Dec25 Results: 19/20 Correctly Predicted; US$770mn Combined One-Way Flow; Avoid Crowds

Some of the DELs have fairly significant short interest and there could be some pre-positioning among the other names too. It might be worth...

Janaghan Jeyakumar, CFA

Quiddity Leaderboard ASX Dec25: Reference Period Ending Soon; Some Surprises Possible

We have revised our expectations for ASX 100 (please see discussion point below the insight). These are our final expectations for the December...

Janaghan Jeyakumar, CFA

S&P/ASX Index Rebalance Preview (Dec 25): Changes Across Indices as Positioning Picks Up

There could be 22 changes across the ASX family in Dec. Plus passive buying in LNW due to a sole listing on the ASX. The adds have outperformed and...

Brian Freitas

ASX Short Interest Weekly (Oct 17th): Northern Star Resources, Transurban, ANZ, CSL, Macquarie

We analyzed ASX short interest report for the past week and highlight short interest changes in Northern Star Resources, Transurban, ANZ, CSL,...

Ke Yan, CFA, FRM

Quiddity Leaderboard ASX Dec25: LNW Float Revision; Gold Names Rally; More Surprises Possible

There are some changes to our list of expected ADDs and DELs since our last insight. There are some names very close to the border and can still...

Janaghan Jeyakumar, CFA

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52-week Range

Market Cap (USDm)

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Dividend (Yield)

Quiddity ASX Dec25 Results: 19/20 Correctly Predicted; US$770mn Combined One-Way Flow; Avoid Crowds

Some of the DELs have fairly significant short interest and there could be some pre-positioning among the other names too. It might be worth...

Janaghan Jeyakumar, CFA

Quiddity Leaderboard ASX Dec25: Reference Period Ending Soon; Some Surprises Possible

We have revised our expectations for ASX 100 (please see discussion point below the insight). These are our final expectations for the December...

Janaghan Jeyakumar, CFA

S&P/​​​​​​​​​ASX Index Rebalance Preview (Dec 25): Changes Across Indices as Positioning Picks Up

There could be 22 changes across the ASX family in Dec. Plus passive buying in LNW due to a sole listing on the ASX. The adds have outperformed and...

Brian Freitas

ASX Short Interest Weekly (Oct 17th): Northern Star Resources, Transurban, ANZ, CSL, Macquarie

We analyzed ASX short interest report for the past week and highlight short interest changes in Northern Star Resources, Transurban, ANZ, CSL,...

Ke Yan, CFA, FRM

Quiddity Leaderboard ASX Dec25: LNW Float Revision; Gold Names Rally; More Surprises Possible

There are some changes to our list of expected ADDs and DELs since our last insight. There are some names very close to the border and can still...

Janaghan Jeyakumar, CFA

S&P/ASX Index Rebalance Preview (Dec 25): Changes Across Indices as Positioning Picks Up